data table1;
input region $ product $ a_cus b_cus c_cus;
cards;
MD banada 100 200 50
VA apple 400 50 60
;
run;

proc transpose data=table1 out=table2 (rename=(COL1=customer_no)) name=customer_type;
by region product;
run;

谢谢popodan！我研究研究。